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Give any two methods of preparation of Ketones

Give any two methods of preparation of Ketones

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A)

By dehydrogenation of alcohols: When the vapours of a secondary alcohol are passed over heated copper  at 573 K, dehydrogenation takes place and a ketone is formed

By hydration of alkynes: Hydration of alkynes other than acetylene yields ketone. For example propyne on hydration with HgSO4 / dil H2SO4  at 333 K forms propanone.

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